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C#编写activeX控件与js相互调用

2012-06-12 17:14 417 查看

控件代码(项目->生成:勾选为COM互操作注册)：

[ComImport, GuidAttribute("CB5BDC81-93C1-11CF-8F20-00805F2CD064")]
[InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
public interface IObjectSafety
{
[PreserveSig]
int GetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] ref int pdwSupportedOptions, [MarshalAs(UnmanagedType.U4)] ref int pdwEnabledOptions);

[PreserveSig]
int SetInterfaceSafetyOptions(ref Guid riid, [MarshalAs(UnmanagedType.U4)] int dwOptionSetMask, [MarshalAs(UnmanagedType.U4)] int dwEnabledOptions);
}

public delegate void MessageHander(string msg);
[ComVisible(true)]//这个不能少
[Guid("C37124B1-8013-44C1-B8B4-9672B2AA175F")]
[InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
public interface IActiveXEvents
{
[DispId(0x60020000)]
void PlayGame(string msg);//提供给javascript绑定
}
[ComVisible(true)]
[Guid("FCB41AEE-C75C-4FFA-89E7-A53E6F6F8365")]
[ClassInterface(ClassInterfaceType.None)]
[ProgId("TransFileClientLib.TransFileCtrl")]
[ComSourceInterfaces(typeof(IActiveXEvents))]
public partial class TransFileCtrl : UserControl, IObjectSafety
{
public event MessageHander PlayGame;
#region IObjectSafety Members
public int GetInterfaceSafetyOptions(ref Guid riid, ref int pdwSupportedOptions, ref int pdwEnabledOptions)
{
pdwSupportedOptions = 1;
pdwEnabledOptions = 2;
return 0;
}

public int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions)
{
return 0;
}
#endregion

private void btnInvokeJs_Click(object sender, EventArgs e)
{
if (this.PlayGame != null)
{
PlayGame("成功!");
}
else
{
WinUtils.FailMsg("调用失败!");
}
}

public void SayHello(){
MessageBox.show("hello!");
}

前台代码:

<head>
<script type="text/javascript">
window.onload = function () {
var transFileCtrl = document.getElementById("transFileCtrl");
transFileCtrl.SayHello();
}

window.onbeforeunload = function () {
//alert("close");
}
</script>
<script type="text/javascript" for="transFileCtrl" event="PlayGame(msg)">
alert(msg);
</script>
</head>
<body>
<object id="transFileCtrl" width="390" height="374"
classid="clsid:FCB41AEE-C75C-4FFA-89E7-A53E6F6F8365"
VIEWASTEXT style="font-size:9pt;width:387px;height:384px;">
</object>
</body>

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